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The .45-70 (11.6x53mmR), also known as the .45-70 Government, .45-70 Springfield, and .45-2 1 ⁄ 10" Sharps, is a .45 caliber rifle cartridge originally holding 70 grains of black powder that was developed at the U.S. Army's Springfield Armory for use in the Springfield Model 1873.
.45 Colt.45-70 Government.45-90 Sharps.45-70 Auto; 45 Raptor.450 Bushmaster.450 Black Powder Express.450/400 Black Powder Express.450/400 Nitro Express.500/450 Magnum Black Powder Express.450 Marlin.450 Nitro Express.500/450 No 1 Black Powder Express.450 No 2 Nitro Express.454 Casull.500/450 Nitro Express.450 Rigby.450 Dakota.450 Watts Magnum
The .50-70 Government cartridge used the Benét internal center-fire primer design and became the official cartridge of the U.S. military in 1866 until being replaced by the .45-70 Government in 1873. The .50-70 cartridge has a pressure limit of 22,500 psi (155 MPa) [1] The official designation of this cartridge at the time of introduction was ...
According to the US Army Ordnance Department tests, the 45-70-405 was loaded to 19,000 psi, [4] while the 45-70-500 was loaded to 25,000 psi [2] The average accuracy of the Springfield Model 1873 was a circle with an average radius of 1.7 inches at 100 yards, corresponding to an ~3.4 MOA.
These rifles were made in a variety of calibers, both rimfire and centerfire, including the 12.17x42 mm rimfire, 12.17x44 mm rimfire and 12.17x44 mm rimmed centerfire Swedish and Norwegian cartridges, .43 Spanish (11.15x58mmR), .50-70, .40-70, .45-70 and later in .22 caliber.
The .45-75 was shorter and fatter than the .45-70 government cartridge. Although the .45-75 was nominally superior to the popular .45-70, the weak toggle-link action with its elevator-style carrier originally designed for handgun cartridges limited the ability of the Model 1876 rifle to safely fire higher pressure loads intended for stronger ...
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This mark was adopted by the Canadian government in 1867 upon its creation as a Dominion to replace the British government's broadshead arrow mark. The ammunition color code system used by Canada used the British system for .303 ammunition, the American system for .30-06 ammunition, and later the NATO system for all other ammunition.